Tina reveals to Oliver that the name Tina Bowland was a cover and that her real name is Dinah Drake. In DC comics, Dinah Drake was the mother of Laurel Lance (Drake being her maiden name) and she was the very first Black Canary.
In the comics, Dinah Drake was original Black Canary debuting in "Flash Comics#86" in 1947.
Steve Bacic who played Sean Sonus appeared on another TV show called Second Chances, which is coincidentally the name of this episode.
This episode reunites Lexa Doig and Steve Bacic from Andromeda (2000).